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hypochlorous acid Line breaks: hypo|chlor¦ous acid
Pronunciation: /ˌhʌɪpə(ʊ)ˈklɔːrəs/

Definition of hypochlorous acid in English:


[mass noun] Chemistry
A weak acid with oxidizing properties formed when chlorine dissolves in cold water and used in bleaching and water treatment.
  • Chemical formula: HOCl
Example sentences
  • It has been demonstrated, for example, that NAC has the ability to scavenge hydrogen peroxide, hypochlorous acid and the hydroxyl radical.
  • In mammalian neutrophils, myeloperoxidase is a key player, converting hydrogen peroxide to hypochlorous acid.
  • This effect would be exacerbated if hypochlorous acid inactivates proteinase inhibitor by oxidizing its critical methionine residue.


Pronunciation: /ˌhʌɪpəˈklɔːrʌɪt/
Example sentences
  • The hypochlorite ion is an oxidizing agent that sterilizes water by ridding it of microorganisms.
  • Common household cleaners can contain simple inorganic chemicals such as sodium hypochlorite or hydrochloric acid.
  • Chloroform can be made from ethanol by reacting the ethanol with calcium hypochlorite.


Mid 19th century: hypochlorous from hypo- (denoting an element in a low valency) + chlorine + -ous.

Definition of hypochlorous acid in:
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